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The main challenge facing the anodic electro-Fenton through the 2e– water oxidation reaction (WOR) for toxics degradation lies in the electrode's stability, because the anodic oxygen evolution (OER) generated O 2 will inevitably exfoliate the electro-active components loaded on the electrode substrate. To address this point, two aspects need attention: 1) Identifying a catalyst that exhibits both excellent electrocatalytic activity and selectivity can improve the faradaic efficiency of hydrogen peroxide (H 2 O 2); 2) Employing novel methods for fabricating highly stable electrodes, where active sites can be firmly coated. Consequently, this study utilized microarc oxidation (MAO) to prepare a ceramic film electrode Zn 2 SnO 4 @Ti at 300 V. Zn 2 SnO 4 acts as an WOR electrocatalyst and further improved the generation of H 2 O 2 for treating real wastewater containing Unsymmetrical Dimethylhydrazine (UDMH). From the perspective of characterization of electrode structure, Zn 2 SnO 4 @Ti forms a stable active coating, the electrochemical yield of H 2 O 2 is high up to 78.4 μmol h−1 cm−2, and the selectivity of H 2 O 2 is over 80% at 3.3 V vs. RHE, which can be fully applied to scenarios where it is inconvenient to transport H 2 O 2 and need in-situ safe production. Additionally, the prepared electrodes exhibit significant stability, suitable for various applications, providing insightful preparation strategies and experiences for constructing highly stable anodes. • Highly active and selective 2e– WOR electrodes were prepared using Zn 2 SnO 4 with TC4. • Zn 2 SnO 4 @Ti–300V achieved a high H 2 O 2 yield of 78.4 μmol h−1 cm−2 at 3.3 V vs. RHE voltage. • Zn 2 SnO 4 improved its 2e– WOR stability by MAO device. • Zn 2 SnO 4 @Ti can effectively degrade UDMH wastewater. [ABSTRACT FROM AUTHOR]